<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title>图片image</title>
    <link rel="stylesheet" href="bootstrap/css/bootstrap.min.css">
</head>
<body>
    <div class="container">
        <img src="bootstrap/img/mm.jpg" class="img-responsive" alt="这是一个桌面图片">
        <img src="bootstrap/img/mm.jpg" class="img-rounded" alt="...">
        <img src="bootstrap/img/mm.jpg" class="img-circle" alt="...">
        <img src="bootstrap/img/mm.jpg" class="img-rounded img-thumbnail" alt="...">
    </div>
</body>
</html>